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A novel way to massively improve the SQ of computer audio streaming


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Most important: please realize this thread is about bleeding edge experimentation and discovery. No one has The Answer™. If you are not into tweaking, just know that you can have a musically satisfying system without doing any of the nutty things we do here.

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15 hours ago, darkless said:

 

Which cable length did you order for your new Gotham GAC-4/1 cable?

 

0.5 metre because of the added weight and relative inflexibility the curve back into UltraRendu needed that length to keep both units apart from one another in my rack.

 

Regards

GG

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15 minutes ago, austinpop said:

 

Thank you, that is invaluable!

 

I am trying to understand what forms the 360 loop here. I assume it is what you labelled the outer and inner shield layers, is that correct?

 

Is the inner shield layer wrapped around each of the 4 quad cables? So you expose all 4 of them in step 7, fold them back, and press them onto the already folded back piece of the outer shield? And that is your 360 loop?

Yes, that is exactly how I get the 360 loop by connecting both inner and outer shields together at both ends without electrically touching connectors.

 

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A big thanks for the highly detailed step by step guide to JSSG360 the Gotham 11301 cable.  The cable has 5 shields in total.  Shield 1 and 2 and 5 are copper and should be joined together to get the JSSG360 effect. Shield 3 and 4 are polyester, non-woven with aluminium coatings on both sides.  Just wondering these shields acting both as insulation and further shieldings to the cable need to be included in the JSSG360 treatment?

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7 hours ago, elan120 said:

Yes, that is exactly how I get the 360 loop by connecting both inner and outer shields together at both ends without electrically touching connectors.

 

May I ask what brand connector is shown in your neat illustration please?

Thank you.

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10 hours ago, elan120 said:

After making few of the Gotham cables to replace the ones in my system, I want to shout out to @lmitche a BIG THANKS for sharing such a great idea.  Meanwhile, since I don't remember seeing detailed instructions on how it is done, I thought perhaps I should share how I build mine in hope of passing on the benefits I received from this great idea to people want to try DIY this cable.

 

1.  Measure and strip the first isolation layer.  Allow approximate 1/8" (3mm) of spacing between positive soldering tab and back of barrel connector,

20180728_154004.thumb.jpg.12d71269c20b394f348f314b2a547b72.jpg

 

2.  First isolation layer stripped, expose top shield layer.

20180728_154224.thumb.jpg.4c60aed59c0a38a2e3df4ab50d633d71.jpg

 

3.  Pull back top shield layer, expose first inner isolation layer.

20180728_154526.thumb.jpg.76c291789c52111cc135e085d86f1c10.jpg

 

4.  Pull back first inner isolation layer, expose quad cable inside.

40928472_Pullbackinsolationlayer.thumb.jpg.43ee8c71b1cf0568b2bfdf5755ff2211.jpg

 

5.  Cut off cotton wires.

20180728_154916.thumb.jpg.b9221eda55fd7decc76b60077ca6f39f.jpg

 

6.  Cut off quad cable isolation layer.

20180728_155024.thumb.jpg.aeab7c179dd04d042161f182d69960f8.jpg

 

7.  All 4 quad cable isolation layer cut off and inner shield layer pulled back.

20180728_155536.thumb.jpg.fa0cc2db8122ef53370dc85719941465.jpg

 

8.  Stripped all 4 cable tips, prepare for soldering.  Note, negative leads (white) are stripped 2x of positive leads (pink).

20180728_155756.thumb.jpg.88fde180b9cbb2b93d5230a15446c4cb.jpg

 

9.  Twist both positive (pink) and negative (white) leads together and tin them with solder.

20180728_160313.thumb.jpg.821d7b4e5e818d4ede661fc20b57242d.jpg

 

10  Twist both positive and negative wires (optional).

1283815999_Twistingwires.thumb.jpg.f05633bc740d9d4f180dc67117d14da1.jpg

 

11.  Cut negative lead to proper length to fit connector.

20180728_160712.thumb.jpg.924246afeb26d0049b434ecffa85b20c.jpg

 

12.  Tin connector.

20180728_162257.thumb.jpg.1c367c1cf08462ead53c768b0f7c922a.jpg

 

13.  Insert connector shell first and then solder both positive and negative leads.

20180728_162631.thumb.jpg.79f0e541500b660af97184a246c27747.jpg

 

14.  Screw on connector shell.

20180728_162858.thumb.jpg.141f1ee45de9a4130a8516d5e974ceb3.jpg

 

15.  Measure and cut a piece of heat shrink tubing to cover the connector shell shoulder and the rest of quad cable.

20180728_222059.thumb.jpg.2af654b7833e4d59cb12071b4693a3f3.jpg

 

16.  Heat shrink tubing installed.

20180728_222245.thumb.jpg.2defdd35f3f4928ea1642fadd561c2e6.jpg

 

17.  Move all shield wires forward, cut to proper length, and measure connectivity between shield and barrel connector body to make sure no electrical contact.

20180728_223035.thumb.jpg.0880fb55f3660132f3007ad77ac8a44c.jpg

 

18.  Measure connectivity between positive and negative on barrel connector to make sure no electrical contact.

20180728_223125.thumb.jpg.a6f5c487904dad8983bde9850fb6005a.jpg

 

20.  Cut a piece of heat shrink tubing to cover shield cables.

20180728_223301.thumb.jpg.628eebd13b90f18657b7c8d4ef2ed5d6.jpg

 

21.  Heat shrink tubing installed.

20180728_223501.thumb.jpg.652666e8da8d1cf715a1978f381b384c.jpg

 

22.  Cut final heat shrink tubing to cover both barrel connector shoulder and Gotham cable outer isolation layer.

20180728_223628.thumb.jpg.4fdddb63d66899ce5de983ee05e2996f.jpg

 

23.  Heat shrink tubing installed.

20180728_223826.thumb.jpg.5bbc957d4fb392a2bf22b102377047f2.jpg

 

24.  Install needed connector spacers.  You are now done on this side, go work on the other side, use the new cable in your system, and don't forgot to let us know what you think about this new cable.

20180728_224406.thumb.jpg.743af33826684171eb3e9eaa23010a92.jpg

 

 

 

 

 

 

Thank you soooo much! 

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6 hours ago, michaeltay5871 said:

A big thanks for the highly detailed step by step guide to JSSG360 the Gotham 11301 cable.  The cable has 5 shields in total.  Shield 1 and 2 and 5 are copper and should be joined together to get the JSSG360 effect. Shield 3 and 4 are polyester, non-woven with aluminium coatings on both sides.  Just wondering these shields acting both as insulation and further shieldings to the cable need to be included in the JSSG360 treatment?

 

I was trying to make sense of the shield numbers in your post, so I went back and found @lmitche‘s diagram. Here it is again:

 

3F589ADD-3625-4385-9782-48AC7F3B36B7.thumb.jpeg.082d355fe263d480d74ee0a6ec10c635.jpeg

 

If I read this correctly, shield 1 & 2 are adjacent, with no insulation layer between them.

 

Now, mapping to @elan120‘s excellent instructions, in his step 3, I am assuming he is pulling back shields 1 & 2 simultaneously.

 

The rest is pretty clear.

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Just now, austinpop said:

 

I was trying to make sense of the shield numbers in your post, so I went back and found @lmitche‘s diagram. Here it is again:

 

3F589ADD-3625-4385-9782-48AC7F3B36B7.thumb.jpeg.082d355fe263d480d74ee0a6ec10c635.jpeg

 

If I read this correctly, shield 1 & 2 are adjacent, with no insulation layer between them.

 

Now, mapping to @elan120‘s excellent instructions, in his step 3, I am assuming he is pulling back shields 1 & 2 simultaneously.

 

The rest is pretty clear.

Yes, that is correct, once the PVC jacket is stripped, shield 1 and 2 are basically together.

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1 hour ago, lmitche said:

Here is the finished hairball ready for shrink wrap.

20180714_163733.thumb.jpg.b8dea0004f7271f34feb0c7c3a537c93.jpg

 

It looks good, but there is not much actual copper in those leads,  although it will be fine for low consumption devices.

 It's a shame they keep using such tiny connectors in so many products when  something like  3 pin min xlrs are far more reliable long term, and lockable .

 

How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

PROFILE UPDATED 13-11-2020

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I was more thinking of

 

But I am cat person ??

Meitner ma1 v2 dac,  Sovereign preamp and power amp,

DIY speakers, scan speak illuminator.

Raal Requisite VM-1a -> SR-1a with Accurate Sound convolution.

Under development:

NUC7i7dnbe, Euphony Stylus, Qobuz.

Modded Buffalo-fiber-EtherRegen, DC3- Isoregen, Lush^2

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9 hours ago, sandyk said:

 

It looks good, but there is not much actual copper in those leads,  although it will be fine for low consumption devices.

 It's a shame they keep using such tiny connectors in so many products when  something like  3 pin min xlrs are far more reliable long term, and lockable .

The leads are 23 awg each so x4 ~ 16 awg equivalent.

Pareto Audio aka nuckleheadaudio

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20 hours ago, austinpop said:

 

I was trying to make sense of the shield numbers in your post, so I went back and found @lmitche‘s diagram. Here it is again:

 

3F589ADD-3625-4385-9782-48AC7F3B36B7.thumb.jpeg.082d355fe263d480d74ee0a6ec10c635.jpeg

 

If I read this correctly, shield 1 & 2 are adjacent, with no insulation layer between them.

 

Now, mapping to @elan120‘s excellent instructions, in his step 3, I am assuming he is pulling back shields 1 & 2 simultaneously.

 

The rest is pretty clear.

 

For those who have not seen Gotham 4/1 Ultra Pro in person, here is what a dissected piece looks lke...

image.thumb.png.c0100b0bd188518e16d453c24b50b765.png

 

Clockwise from upper left:

1) Blue outer cover;

2) 2 layers of copper wire shielding...one left hand twist, the other right hand; more like a tight layer of fine copper wires than a braid;

3) Aluminized fabric (shown bottom left) - wrapped diagonal over conductor bundle;  Very thin like light weight aluminum foil;

Despite insistance by Gotham EU that this layer is conductive, I confirm that this layer IS conductive on the front, IS conductive on the back, but NOT conductive front to back as previously reported by <lmithce> so effectively is 2 layers of shield sandwiching an insulated layer;  NOTE: It appears that the question of "conductivity" of this layer is a matter of semantics!;

4) String-like cotton(?) spacers (5);

5) 3 of 4 conductors still wrapped in aluminized fabric (same as described above shown bottom right);

6a) 1 of four conductors after removal of aluminized fabric showing thin layer of copper wire shielding;

6b) Beneath the cooper wire shielding is the insulated copper conductor;

 

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5 minutes ago, BigGuy said:

 

3) Aluminized fabric (shown bottom left) - wrapped diagonal over conductor bundle;  Very thin like light weight aluminum foil;

Despite insistance by Gotham EU that this layer is conductive, I confirm that this layer IS conductive on the front, IS conductive on the back, but NOT conductive front to back as previously reported by <lmithce> so effectively is 2 layers of shield sandwiching an insulated layer;  NOTE: It appears that the question of "conductivity" of this layer is a matter of semantics!;

 

So is there a layer of something between the aluminum? 

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